[jsz0]

There is no external video connection available to push the bandwidth required for external Retina displays yet. You could do a 15-17" external Retina display but 24-27" would require 2-3 ThunderBolt connections plus a GPU that is not even technically feasible to put inside of a laptop right now. It's OK to be disappointed but I think it's also good to be grounded in reality too. You're looking for a feature that is basically technically impossible on a MacBook Pro at this time. I wouldn't even expect to see it on a Mac Pro until late next year pending the next major revision to ThunderBolt that could move this much bandwidth over a single connector. Depending on GPU roadmaps, which I'm not terribly familiar with, it could be several more years before mobile GPUs can handle that load. It may be that a Retina ThunderBolt Display will include it's own GPUs for this instead.

[radley]

I'm not concerned about using a retina Cinema Display.

What you may not understand since you probably don't use Creative Suite is the 1x pixel problem. The RMBP doesn't account for that.

The most obvious problem is vector drawing - the retina monitor automatically scales and anti-aliases vector lines so there's no precision or accuracy.

You can do large detailed bitmap images on the retina pretty well, but you can't do small pixel-accurate work that you need for websites & applications.

It's a big deal, which is why Apple & Adobe were so vague on the release.

[grecy]

I personally think this is why they're holding out on new Mac Pros until late 2013. They'll have Retina external displays, and enough hardware to drive them.